Cluster test driver 4 atoms -25 25 xlo xhi -25 25 ylo yhi -25 25 zlo zhi 1 atom types Atoms 1 1 1.989907 0.3585894 1.995615 2 1 2.640493 2.59546 1.392112 3 1 2.7347 2.276458 3.733048 4 1 4.272646 1.115879 1.870464 Masses 1 28.0855